*{
    margin: 0;
    padding: 0;
}
#back-top {
	position:fixed;
	width:60px;
	height:60px;
	bottom:30px;
	right:30px;
	background:#ee2831;
	text-align:center;
	line-height:60px;
    text-decoration:none;
    color: #000;
}
.nav{
    width: 200px;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #1b1b1b;
}
.nav-head{
    width: 200px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    background-color: #ee2831;
    cursor: pointer;
}
li{
    list-style: none;
    height: 50px;
    line-height: 50px;
    text-align: center;
}
li:hover{
    background-color: #ee2831;
}
a{
    display: inline-block;
    height: 50px;
    width: 200px;
    text-decoration: none;
    color: #fff;
}
.nav-main{
    margin-top: 200px;
}
.main{
    padding: 10px;
    margin-left: 200px;
}
.team{
    width: 1200px;
    display: flex;
    flex-wrap: wrap;
}
.main .team img{
    width: 280px;
    height: 180px;
    margin: 10px;
    transition:all 0.5s;
	cursor:pointer;
}
.team img:hover{
    transform: scale(1.05);
    box-shadow: 10px 10px 5px #888888;
}
.entrance{
    width: 1200px;
    height: 300px;
    margin-top: 20px;
}
.entrance div{
    width: 1180px;
    height: 280px;
    margin: 10px;
    position: relative;
}
.name{
    position: absolute;
    top: 20px;
    left: 10px;
}
.motto{
    position: absolute;
    bottom: 50px;
    left: 10px;
}
.person{
    position: absolute;
    bottom: 10px;
    left: 10px;
    font-size: 20px;
}
.main img{
    width: 1180px;
}
.entrance div{
    transition:all 0.5s;
	cursor:pointer;
}
.entrance div:hover{
    transform: scale(1.03);
    box-shadow: 10px 10px 5px #888888;
}
.end{
    margin-left: 200px;
    height: 70px;
    line-height: 35px;
    background-color: #656565;
    text-align: center;
    margin-top: 20px;
}